Recent questions tagged enums

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enums - The best singleton pattern since Java 5

Since Java 5 it is said that the best way to create a singleton is by a single-element enum type. Example: ... singleton gets by being an enum? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Swift switch statement considered all cases of Int, but compiler still display error

I understand switch statement in Swift must be exhaustive, otherwise we have to provide an default case. I saw the ... return .Negative } } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Garbage collector in Android is running, but nothing is shown as being allocated in ddms' allocation tracker

In my application, I'm careful not to make heap allocations in the main render loop, to prevent the garbage ... collected every second or so See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Swift Enumerations .toRaw and .fromRaw with Xcode 6.1

In Xcode 6.1, the enumerations toRaw and fromRaw functions don't work anymore: enum TestEnum : String { case A ... have a member named 'fromRaw' See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Difference between associated and raw values in swift enumerations

Swift enumerations have both associated and raw values. But the use cases of these values is not clear to me. ... example would be very helpful. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Fastest implementation of simple, virtual, observer-sort of, pattern in c++?

I'm working my arse off trying to implement an alternative for vtables using enums and a ton of macro magic ... responses that might come up. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - JAXB enumeration with numeric values

I want to restrict input values like this <simpleType name="SomeCode"> <restriction base="string"> <enumeration ... any solution or workaround? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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430 views

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enums - Best way to define error codes/strings in Java?

I am writing a web service in Java, and I am trying to figure out the best way to define error codes ... in the documentation would be helpful. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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enums - Dynamic enumeration restriction using XSD 1.1

I am trying to create a schema definition using XSD 1.1 in which outcome of one element is dependent on other ... attained? Thanks in Advance... See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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336 views

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enums - Swift: testing against optional value in switch case

In Swift, how can I write a case in a switch statement that tests the value being switched against the ... t actually unwrap the optional). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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441 views

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enums - How do I overload an operator for an enumeration in C#?

I have an enumerated type that I would like to define the >, <, >=, and <= operators for. I ... implictly defined operators. Any suggestions? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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513 views

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enums - Can associated values and raw values coexist in Swift enumeration?

There are examples on Swift book demonstrating associated values and raw values separately, is there a way to ... have cases with arguments } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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327 views

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enums - Understanding scala enumerations

I have to say I don't understand Scala enumeration classes. I can copy-paste the example from documentation, but ... .Value, not type WeekDay? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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392 views

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enums - Does Dart support enumerations?

Does Dart support enumerations? For instance: enum myFruitEnum { Apple, Banana } A cursory search of the docs suggests no. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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